From a November 30th article at the US Finance Post blog:

Critics of those who claim that man-made global warming is a serious threat to the planet and settled science frequently point to the fickleness of scientists on the issue, noting that in the 60s and 70s scientists were warning of just the opposite. It now appears the critic’s claims may have merit as a new consensus is beginning to once again return to the global cooling model.

The whole PIECE makes for interesting reading.